1. Wireless Network Boot
Camp
Sarah Bombich
January 2009
Wednesday, January 27, 2010

2. Internet
SANbox ®
The new look for powerful, easy t
• SANbox 9000 Stackable Chassis
• SANbox 8000 Storage Services P
• SANbox 6000 Intelligent Storage
• SANbox 5000 Stackable Switch
• SANbox 1000 Fixed Port Switch
Network Backbone
(or Modem, at
What is a
home)
Router
network?
(may be skipped
at home)
Internet >
Modem > Router
> Wireless
Access Point > Wireless
Access Point
Computer
Wednesday, January 27, 2010

3. How does Wi-Fi work?
Radio waves
Circular signal, like a rock in a pond
Different devices = different signal strengths = different
circle sizes
Different devices = different antenna strengths =
differing ability to detect signals
Wednesday, January 27, 2010

4. Overlapping Access Points
Wednesday, January 27, 2010

5. Different Types of Wi-Fi
802.11
Flavors include 802.11a, 802.11b, 802.11g and
802.11n
Certified by a standards board to ensure
interoperation
WUFI/WUFI-S supports 802.11a/b/g
Wednesday, January 27, 2010

6. What happens when I “get
on wireless”?
Authentication
Proving your identity
Encryption
Putting information in code so that it remains secret
Wednesday, January 27, 2010

7. Networking as a Phone Call
Join wireless network
Locate the phone
or plug into ethernet
Say hello to DHCP
Pick up the phone
server
Listen for response
Hear dial tone
from DHCP server
Dial number & hear Request IP address
phone ring from DHCP server
Someone answers Receive IP address
from DHCP server
You ask their name and ask a Wireless access point asks for
question to verify it's the correct and you provide user name and
person password
Optional: WUFI-S only Optional: WUFI-S only
Special software creates an
skips step
skips step
You tell person the code language encrypted connection between
WUFI
WUFI
in which to speak your computer and the wireless
access point
Start sending and
Have a conversation
receiving data
Wednesday, January 27, 2010

8. Wash U’s
Internet
SANbox ®
The new look for powerful, easy to manage fabrics
• SANbox 9000 Stackable Chassis Switch
Wireless
• SANbox 8000 Storage Services Platform
• SANbox 6000 Intelligent Storage Router
• SANbox 5000 Stackable Switch
• SANbox 1000 Fixed Port Switch
Network Backboone
Network Router
in Action
Authentication
Server
Wireless
Access Point
Wednesday, January 27, 2010

9. Wash U’s Wireless Network
in Action
How does it work?
Operated by NSS (Network Service and Support)
Meru
Multiple Access Points with overlapping coverage
WUFI, WUFI-S, GUESTWIFI-WUSTL, WUNOREG,
LAW-S, WUCON WIRELESS
Load balancing - signals get stronger and weaker
Wednesday, January 27, 2010

10. Differences between WUFI,
WUFI-S, GUESTWIFI-WUSTL?
WUFI WUFI-S GUEST WIFI-WUSTL
What can you do? View web pages, Everything, Everything, but number
SSH, SFTP, access including access of connections and
Library resources Library resources speed limited
What doesn’t work* FTP, non-secure Nothing Nothing - but could be
email transfers (POP, very slow or
IMAP), unavailable, depending
Remote Shell, telnet on usage; must proxy to
use Library resources
Does it require authentication? Yes Yes No
Do you have to enter your login Yes No No
and password every time you
connect?
Do you have to install special No No No
software to use it?
Is your data encrypted and No Yes No
secure?
Who can access it? Current students, Current students, Everyone, including
faculty, staff with faculty, staff with visitors
WUSTL key WUSTL key
Wednesday, January 27, 2010

11. Where is WUFI?
Which network is most widely used?
WUFI-S - used on South Forty so most students are
already set up
Same networks available around campus in most
buildings but number of available connections varies
Wednesday, January 27, 2010

12. Where is WUFI?
Wednesday, January 27, 2010

13. What should I expect when I
connect to WUFI?
Enable
wireless,
check list
of
available
networks.
Select
WUFI and
Connect
or Join.
Wednesday, January 27, 2010

14. What should I expect when I
connect to WUFI?
Your system will
automatically be
assigned an IP address
on the University
wireless network. Open
your web browser. and
attempt to open a web
page.
Wednesday, January 27, 2010

15. What should I expect when I
connect to WUFI?
You will see certificate
errors. Select “Accept
this certificate
permanently” and OK
and then OK on the
next screen.
Certificate should say
something about
wustl.edu or Meru
Networks
Wednesday, January 27, 2010

16. What should I expect when I
connect to WUFI?
You are redirected to the WUFI authentication page.
Wednesday, January 27, 2010

17. What should I expect when I
connect to WUFI?
Authenticate using your WUSTL key
You wait. Some browsers will take you straight to the
web page requested in step 2; some will first show a
Web Authentication Succeeded pop-up or screen.
Wednesday, January 27, 2010

18. What should I expect when I
connect to WUFI-S?
See Student Technology Services or Network
Support Services for up-to-date directions for
iPhone & iPod Touch, Mac OS X 10.5 Leopard,
Windows 7, Vista & XP.
Connecting to WUFI-S
Mac OS X (10.5.x) Gregg Hall Store Front
http://sts.wustl.edu
935-7100 (help desk)
AIM: WUSTSHelp
What You Will Do: What You Will See:
We strongly recommend you first: Step 1: Airport Icon and List of Wireless Networks
! Connect your computer to the WIRED network FIRST
AND REGISTER
! Install all Apple updates
! If you have a 3rd party wireless configuration on your
computer, we recommend REMOVING that software
before using these instructions!
1. Click the “Airport” icon near the top-right of your screen.
When the list of available wireless networks appears, select
WUFI-S.
2. Enter your WUSTL-KEY username and password. Click OK.
3. When asked to verify the security certificate, click on “Show Step 2: WUSTL KEY Username and Password
Certificate.”
4. Click the small button labeled “Always trust accounts-
dc1.account.ad.wustl.edu”. Click “Continue.”
5. When prompted for a password to save the certificate, enter
the username and password for your computer’s user logon
account. Click “Ok.”
REGISTERING YOUR COMPUTER FOR USE IN RESIDENTIAL
LIVING SPACES/HALLS:
Step 3: Show Certificate
Once you have connected your computer to WUFI-S, you will
need to register it on the STS Network in order to use it in the
residential living spaces/halls. Follow these steps to register on
the STS network:
a. Be sure you are connected to WUFI-S and open a web
browser.
b. Navigate to a page, such as www.google.com Step 4: Always Trust XX Button
c. You will be automatically redirected to the registration page
for the STS network.
d. At the bottom of the page, click “Regular full time students
using their WUSTL KEY.”
e. The registration page will appear. Complete the form using
your WUSTL key and contact information. When finished,
click “Register.”
f. You will get a confirmation that registration is complete.
Close your web browser.
g. Reboot your computer. You are now registered on the STS
network!
Step 5: Computer’s User Logon Account Info
Wednesday, January 27, 2010

19. Troubleshooting a WUFI or
WUFI-S Connection
If someone cannot get onto WUFI, the problem
could be:
Lack of wireless coverage
Wireless disabled on their laptop
Appears connected but cannot load any web
pages which is a capacity issue
Trouble getting to or past the authentication page
(WUFI only)
Wednesday, January 27, 2010

20. Where to get more help?
Arc
WUFI-S
Some laptop configuration
AIM (OlinLibraryArc) or call (5-4137) first before
referring anyone
STS
Official support location for wireless; will help with
laptop configuration
Call (5-7100), AIM (WUSTSHelp), refer (South 40)
Wednesday, January 27, 2010

21. Where
to get
more
help?
Wednesday, January 27, 2010